入力エリアとテキストエリアの値にエラーメッセージを挿入した後、onclick で入力エリアとテキストエリアの値をクリアするためのヘルプを探しています。これが私のコードです:
HTML
<form name="form" action="contact-handler.php" method="post" onsubmit="return contact();">
<input type="text" name="name" placeholder="Name:">
<input type="text" name="email" placeholder="E-mail:">
<select name="subject">
<option value="0">Categories</option>
<option value="1">Web Design</option>
<option value="2">Web Development</option>
<option value="3">Graphic Design</option>
<option value="4">Photography / Video</option>
<option value="5">Marketing</option>
</select>
<textarea name="message" placeholder="Message:"></textarea>
<input class="button" type="submit" value="Send">
</form>
JavaSript
function contact() {
var name = form.name.value;
var email = form.email.value;
var atPosition = email.indexOf("@");
var dotPosition = email.lastIndexOf(".");
var subject = form.subject.value;
var message = form.message.value;
var flag = 0;
// Name
if(name != "" && name.length > 2 && !/[\d]/.test(name)) {
flag++;
form.name.style.border="1px solid #CCC";
}
else{
form.name.style.border="1px solid #D73300";
form.name.value="Please enter a valid name";
}
// Email
if(email != "" && atPosition > 1 && dotPosition > atPosition + 2 && dotPosition + 2 <= email.length) {
flag++;
form.email.style.border="1px solid #CCC";
}
else{
form.email.style.border="1px solid #D73300";
form.email.value="Please enter a valid email";
}
// Subject
if(subject > 0) {
flag++;
form.subject.style.border="1px solid #CCC";
}
else{
form.subject.style.border="1px solid #D73300";
}
// Message
if(message != "" && message.length > 30) {
flag++;
form.message.style.border="1px solid #CCC";
}
else{
form.message.style.border="1px solid #D73300";
form.message.value="Please enter a valid message";
}
// Flag
if(flag == 4) {
return true;
}
else
{
return false;
}
}